// functional/CtorReference.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.

class Dog {
    String name;
    int age = -1; // For "unknown"

    Dog() {
        name = "stray";
    }

    Dog(String nm) {
        name = nm;
    }

    Dog(String nm, int yrs) {
        name = nm;
        age = yrs;
    }
}

interface MakeNoArgs {
    Dog make();
}

interface Make1Arg {
    Dog make(String nm);
}

interface Make2Args {
    Dog make(String nm, int age);
}

public class CtorReference {
    public static void main(String[] args) {
        MakeNoArgs mna = Dog::new; // [1]
        Make1Arg m1a = Dog::new;   // [2]
        Make2Args m2a = Dog::new;  // [3]

        Dog dn = mna.make();
        Dog d1 = m1a.make("Comet");
        Dog d2 = m2a.make("Ralph", 4);
    }
}
